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b=ph0ZExWOTBSSmdRfB4nmMhQhpcprkugPz/3bDYGAsmJlDy/PRZCLfFe4VWhx8UcxK GvxTS2gTgHt8ho4jjnQBpzPHuy8cKx+bXFnjPwq2x/KVW4W8VleFoKZZVbpOJDeYmZ X02vYw4zs7CnPVub1abgfNYQFzxZ21DKLEVxtzXqwVyu2ridEC87Zi8fKV5PdqicZM WUK/GQH+5IW6Z7ZCIVBoiG1t5Vu//ll0qvnjvGgcTac4EumsDOGn8MWGTdUfQKzXjH lrceChUUKZhRSYVUXIYGQ3VRp6Z93MZweRgm7Jb0Zvysbzuxy3hjs3gOqUcc9ZY+TA uxjPGStPBlnnw== From: SeongJae Park To: Thadeu Lima de Souza Cascardo Cc: SeongJae Park , Andrew Morton , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Minchan Kim , Sergey Senozhatsky , Yosry Ahmed , Nhat Pham , Chengming Zhou , Lorenzo Stoakes , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-dev@igalia.com Subject: Re: [PATCH v2] mm: show_mem: show number of zspages in show_free_areas Date: Tue, 2 Sep 2025 18:31:00 -0700 Message-Id: <20250903013100.190488-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250902-show_mem_zspages-v2-1-545daaa8b410@igalia.com> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 5B4BCC0006 X-Stat-Signature: hob8ojoqi9k3b4agmx6zaabmu7nbf617 X-Rspam-User: X-HE-Tag: 1756863065-158479 X-HE-Meta: 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 s4GxbTYK +RkcVKIw/wgLGQFbVrIWBBui7cqxuhFxqGG/VY+vTNm01/cy56sLpXVoqU5Fh4T+HxZvTxiCmb6xMLQwrGemlcJBKzgGcI8Z93YiFF3S317xlBwJmxILQvf/aIwI4jEzkSWdqIf0kWF9Lh1QB812WhUX24+Q1NGWzh9xBlwtSUFTuCiErRYJVgQpp75MhAiF5ZAr9hZHXgRw1DbEFod+k7pj2tgrESyTkn0hLa1kVewFdqwBbgdTu1C1ke3tEWKxZswtsThZNrsve6pAehXfX5vSOzyI7i/Cwo+p1h4JdqhK/hC+i5Cse62BYSW9lv9yP8UHKttJiyqQ/fCczKObVg8cxkQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 2 Sep 2025 09:49:21 -0300 Thadeu Lima de Souza Cascardo wrote: > When OOM is triggered, it will show where the pages might be for each zone. > When using zram or zswap, it might look like lots of pages are missing. > After this patch, zspages are shown as below. > > [ 48.792859] Node 0 DMA free:2812kB boost:0kB min:60kB low:72kB high:84kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB zspages:11160kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB > [ 48.792962] lowmem_reserve[]: 0 956 956 956 956 > [ 48.792988] Node 0 DMA32 free:3512kB boost:0kB min:3912kB low:4888kB high:5864kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:28kB active_file:8kB inactive_file:16kB unevictable:0kB writepending:0kB zspages:916780kB present:1032064kB managed:978944kB mlocked:0kB bounce:0kB free_pcp:500kB local_pcp:248kB free_cma:0kB > [ 48.793118] lowmem_reserve[]: 0 0 0 0 0 > > Signed-off-by: Thadeu Lima de Souza Cascardo Acked-by: SeongJae Park Thanks, SJ [...]